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TPS65912: how to configure, setup/specify OTP and lead time for programming OTP

Rick Adolf
Intellectual 335 points
Part Number: TPS65912

I'm planning on using this part to power a custom ASIC, processor (which have separate analog power rails) (3 DCDCs, 8 LDOs). I don't believe the default settings aren't adequate (but it is a complex device, so there should probably be a discussion about this). I need to ensure that the LDOs are set to the right voltages prior to enabling and control the sequencing (ideally with the enables, but by I2C if necessary). If there a software tool to configure the OTP, is there a way of verifying/simulating the configuration and what's the process and time required to obtain the OTP'd parts?

  • 0
    TI__Genius 9380 points
    Rick,
    I have forwarded you request to our product specialist on this part. She will be able to help you. Thank you for connecting through TI E2E.
  • 0
    TI__Genius 10000 points

    Rick,

    Hi, the way our OTP parts work is that they have a default power up/power down sequence, with default startup voltages. Once the device is on, you can use I2C in order to program the voltages to your desired amount (so long as it is within the spec of that pin). If the start up voltages for the TPS659121 or TPS659122 are not compatible with your system, you can contact your TI sales representative about what custom options may be available.

    Below are the default start up voltages for the TPS659121 and TPS659122 (from the datasheet). Options on voltage ranges for each of these pins can also be located in the datasheet.

    Thanks,

    Nastasha

  • 0 in reply to Nastasha
    Intellectual 335 points

    Is there a way of having some of the LDOs and DCDCs off until their voltages are configured correctly?

  • 0 in reply to Rick Adolf
    TI__Genius 10000 points
    Rick,

    Unfortunately, that is not an option.

    Thanks,
    Nastasha